Hydraulic brake pipe coupling



Feb. i7., .1948..

A'. A. POMMER HYDRAULIC BRAKE PIPE COUPLING Fil-ed March 26, 1945 3 Sheets-Sheet 1 Syvum/tw A. f4. PON/75l? Feb.l '17, 1948. l A. A. -PoMMi-:R 2,436,327

' HYDRAULIC BRAKE PIPE COUPLITNG I I Filed March 26, 19445 5 'Sheets-Sheet `2 Feb. 17,' 1948.

A. A. PoMMl-:R 2,436,327

HYDRAULIC BRAKE PIPE couPLING Filed March 26, 1945 I5 Sheets-Sheet 5 Patented Feb. 17, 1948 UNITED STATES PATENT OFFICE HYDRAULIC BRAKE PIPE' COUPLING Arthur A. Pommer, Montrose, Calif.

Application March 26, 1945, Serial No. 584,814

3 Claims.

This invention relates to a pipe coupling and more particularly to a coupling intended for use as means for releasably connecting pipes of a hydraulic brake system or the like, wherein liquid or other uid is under very high pressure and it is desired to securely connect companion pipes without likelihood of leakage.

Therefore, one object of the invention is to provide a coupling comprising companion coupling sections which are held firmly in engagement with each other when coupled and members carried by the two sections moved into position for locking the sections together and also uncovering ports so that the ports may be disposed in registry with each other for passage of fluid through the coupling.

Another object of the invention is to provide one coupling section with a rotatable member which is held stationary when the coupling sec- Another object of the invention is to provide a coupling consisting of companion coupler members which may be readily and quickly applied to each other or detached, but will not be liable to accidentally becoming detached.

Another object of the invention is to provide a coupler which will very eiectively prevent leakage of liquid and also prevent air from entering and interfering with proper operation of the hydraulic brakes of a brake system.

Another object of the invention is to provide a coupler consisting of companion members so formed that when they are detached from each other, loss of liquid in a hydraulic brake system will be prevented.

Another object is to provide a coupler consisting of sections so formed that when they are detached from each other, shields may be applied to prevent dust and other dirt or foreign matter from entering the coupling members and causing them to become clogged.

Another object of the invention is to provide a coupler which is simple in construction, cheap to manufacture, and very easy to assemble or take apart for cleaning or repairs.

In the accompanying drawings:

Fig. 1 is a top plan view of the improved coupler.

Fig. 2 is a side view of the coupler shown in Fig. 1.

Fig. 3 is a view similar to Fig. 2, showing the coupler members locked together.

Fig. 4 is a sectional view taken longitudinally through the female coupler member, the view ,being on the line 4 4 of Fig. 1.

Fig. 5 is a view lookingat the lower end of Fig. 4

Fig. 6 is a sectional view taken longitudinally through the male coupler member.

Fig. 7 is a top view of Fig. 6.

Fig. 8 is a sectional view taken longitudinally through the coupler and coupler members when rst applied together.

Fig. 9 is a transverse sectional view on the line 9 9 of Fig. 8.

Fig. 10 is a fragmentary sectional view on the line Iii-l0 of Fig. '1.

Fig. 11 is a view similar to Fig. 8, showing the coupler sections locked to each other.

Fig. 12 is a sectional view on the line I2--I2` of Fig. 11.

Fig. 13 is a sectional view on the line I3-I3 of Fig. 11.

Fig. 14 is a view showing the dust-excluding plug applied to the female coupler member.

Fig. 15 is a view showing the dust-excluding cap applied to the male coupler member.

The improved coupling constituting the subject matter of this invention consists of a female coupler member I carried by a pipe 2 and a male coupler member 3 carried by a pipe 4 and, when the coupler members are applied to and locked in engagement with each other, ow of liquid under pressure will be permitted from one pipe to the other.

The female coupler member has a body or head 5 which is circular in cross section or end elevation and formed with a threaded socket 6 which opens through its outer end and receives an elbow 1 to which pipe Vi! is connected by a terminal 8 of conventional formation. An externally threaded ring or collar 9 is rotatably mounted about the body 5 with its inner end abutting an outstanding annular flange or shoulder I surrounding the inner end of the body and this ring is screwed into a sleeve II which projects forwardly beyond the body and is formed with an internal annular shoulder I2. After the `sleeve II has been screwed to its proper position upon the ring 9 a set screw I3 is tightened and holds the sleeve and the ring against turning :movement relative to each other. When the elbow 'I is screwed into the socket 6, its end terminates in spaced relation to the inner end of the socket so that communication will be establlished between the passage I4 of the elbow and the bore or passage I5 formed through the body 5. The bore i5 is enlarged at its outer end to form a seat I6 in which a gasket I'I is mounted to form a tight seal when a plate I8 is in position to extend across the gasket and block the outer end oi bore i5. This plate I8 is of semicircular shape, as shown in Fig. 5, and is formed with a recess IQ in order that the plate may t about a pin 25 and be turned about the pin from the retracted position shown in Fig. 5 to the extended positionshown in Fig. 13.` An arcuate retainer 2! which is anchored to the body 5 by pins 22 overlaps a iiange 23 extending along the` arcuate edge of the plate I8 to hold the plate in place and guide movement thereof about the pin" under the flange or Wall 35 when moved to an extended position and both the extension and the plate will have their iianges 23 and 24 engaged under the arcuate strip 2| and the two coupling members I and 3 will be rmly held together and prevented from accidentally slipping escape of liquid from bore I5 when the plate is in its retracted position. Referring to Fig. 4, it will be seen that the inner or front end of the body 5 has a flat semicircular face 2likv against which the plate IS lits and a second flat semicircular face 25 which is disposed in odset parallel relation to the face 24. These offset surfaces denne a shoulder 26 extending in slightly oiset relation toa diameter of the body and, by referring toFig. 5it willbe seen that the pin 25 is located midway the length of the shoulder and. that when the' plate I8 is in retracted position its straight edge extends diametrically of the body in spaced parallel relation to the shoulder 26. A pin Z? projects from the surface 25 of the body 5 and this pin is located diametrically opposite the bore or port I5, asshown in Fig. 5.

YThe male member 3 has 'a body 28 circular in cross section and tting Within a cylindrical sleeve 2e, and has a reduced rear end portion 3D about which lits a nut or collar 3l which bears against the annular shoulder 32 and has threadf Yed engagement with the externally threaded end portion of the sleeve 29 to rotatably hold the body 28 and the sleeve 29 in engagement with each other. `For vhalf of its circumference, the

body 2S is extended to form an integral extension 33 having the. arcuate portion of its margin formed with an `outstanding flange 3d for overlapping engagementlwith the arcuate strip 2I when the body 28 is given a partial turn in sleeve 29 and moved from 2 retracted position in which it is disposed' entirely under the semicircular Vflange or end wall 35 of the sleeve 29 to an extended position in which it extends transversely Yol the wall 35 and projects across the face 24 of the body 5. The straight edge face of the extension S3, which extends diametrically of the body 28, is formed midway its length with a socket 3B and the wall or ange 35 is formed with a similar recess Si so that the pin 20 may engage in the registering recesses and form a pivot about which the extension 33 of the body 28 will turn from a retracted position to an extended position and move plate I3 with it about the pin 28. An elbow 38 with which the pipe il is connected by a termine-.1,38 is screwedrinto a threaded socket 48 iormedcentrally of the body and since the end of the elbow is spaced from the inner end or bottom of the socket, communication is established between thebore il of the elbow and the passage i2 formed through the body 28 and its extension This passagel i2 has an enlarged end portion forming a seat to receive a gasket 43 'which forms a tight seal for the passage 152 .when the extension 33 is in its retracted position runder 'fiange and will. also have at face to apart since they must be turned to retract the extension 33 and the plate I8 before they may be detached from each other. When the extension 33 is in'its retracted position, it is held against movement by a latching pin 44 which is slidably received' in a socket l5 formed in the extension and urged outwardly to its operative position, shown in Fig. l0, by a spring 46. The outer end of the latching pin 44 Vengages in'an opening or seat il formed through the flange 35 and prevents turning of the body 28 until the two coupler sections are applied to each other and the pin 2 enters the opening-41 and presses against the end of pin 44 to depress it and move it out of the opening 41 so that the body 2S may be turned in the sleeve 2B. Since the latching pin returns to an operative position in the opening l when the coupler members are separated, the extension 33 Will be held under the ilange and, since the plate is irictionally held against accidental turning by frictional engagement with the strip 22, it will be prevented from accidentally turning out of the retracted position. Therefore, fluid cannot escape whenv the coupler sections'are separated.

To prevent dust or dirt from collecting under the outer end of the coupler member 3, there has been provided a cap 48 whichts about the sleeve 29 and is held against loss by a chain. There has also been provided al plug 5I) carried by a chain 5I and which is thrust into the sleeve H when in use-and prevents dust andv dirt from entering said sleeve. Since the chains i9 and 5I are provided with mounting plates 52 and 53 engaged about the terminals 39 and V8, the cap and plug will not become lost.

What is claimed is:

l. A coupling for pipes comprising companion male and female coupler members circular in cross section and rotatable relative to each other, each coupler member having a casing and a body therein formed with a uid passage for registering with the fluidpassage of the other coupler member when the male coupler member is fitted into the female coupler member and its body turned out of its normalposition, said male coupler member having its casing provided with a semicircular closure covering the vpassage of its body when its body is in its normal position, and a closure in the female coupler member normally closing the passage in its body and engaged by the body of the male coupler member and moved thereby to open position when the body of the male coupler member is turned to a position disposing the passages of the coupler members in registry, an arcuate strip carried by the body of the female coupler member-and extending circumferentially: thereof along its.; marginal edge for a portion of its circumference and having a flange overlapping the arcuate edge of the closure for the female member and holding the said closure flat against the body of the female member and permitting sliding movement of the closure circumferentially of the body, the portion of the body of the male member through which its passage is formed being semicircular and having its arcuate edge provided with a flange partially engaged under the flange of said strip when in open position, and the closure of the female coupler member being partially engaged under the closure of the male member when in open position whereby the said closure members and portions of the bodies of the coupler members have overlapping engagement with each other to releasably hold the coupler members together.

2. A coupling for pipes comprising companion male and female coupler members, each having a cylindrical casing and a body therein formed with a semicircular extension having a straight edge face extending diametrically of the body and an arcuate edge face, the body of each coupier section being formed with a fluid passage having its outer end opening through the extension and surrounded by a gasket, the body of the male coupler member being rotatable in its casing and the body of the female coupler member being stationary, the casing of the male coupler member carrying a semicircular end wall having a diametrically extending edge face abutting the diametrically extending edge face of the extension of the body of said female member, a semicircular plate resting against the extension of the body of said female coupler member and movable along the same from retracted position to extended position when the body of the male member is turned, an arcuate strip anchored to the body of the female member and overlapping the arcuate edge of said plate, and the extension of the body of the male member having its diametrically extending edge engaging the diametrically extending edge of said plate and turning the plate to extended position 45 1,064,362

exposing the fiuid passage of the female coupler member when the body of the male coupler member is turned to move its extension to extended position and dispose its fluid passage in 3. A coupling for pipes comprising companion male and female coupler members, each having a cylindrical casing and a body therein formed with a semicircular extension having an edge face extending diametrically of thebody, the body of each coupler section being formed with a fluid passage. having its outer end opening through the extension and surrounded by a gasket, a post carried by the body of the female coupler member centrally thereof and engaging in a socket at the center of thebody of said male coupler member to guide rotation of the body of the male coupler member in its casing, the casing of the male coupler member carrying a semicircular end wall having a diametrically-extending edge face abutting the diametrically extending edge face of the extension of the body of said female member, a semicircular plate resting against the extension of the body of said female coupler member and movable about said post from retracted position closing the passage of the female coupler member by action of the extension of the body of the male coupler 'member when said body of the male member is 5 turned to move its passage from under the end registry with the iiuid passage of the female member.

wall and into registry with the passage of the female coupler member, said plate and the extension of the male coupler member serving to reieasably secure the couplermembers together when extended.

ARTHUR A. POMMER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 379,684 Cooke Mar. 20, 1888 569,668 Pinckert et ai Oct. 20, 1896 610,035 Edgington Aug. 30, 1898 713,777 Ledovsky Nov. 18, 1902 823,510 Christensen June 19, 1906 Sharp June 17, 1913 2,317,827 Townhill Apr. 27, 1943 2,326,143 Hufferd Aug. 10, 1943 2,357,232 Snyder et a1. Aug. 29, 1944 

